Gradual regime shifts in spatially extended ecosystems

Golan Bel; Aric Hagberg; Ehud Meron

doi:10.1007/s12080-011-0149-6

Gradual regime shifts in fairy circles

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1504289112 ◽

2015 ◽

Vol 112 (40) ◽

pp. 12327-12331 ◽

Cited By ~ 46

Author(s):

Yuval R. Zelnik ◽

Ehud Meron ◽

Golan Bel

Keyword(s):

Mathematical Modeling ◽

Alternative Stable States ◽

Regime Shifts ◽

Self Organization ◽

Stable States ◽

Birth And Death Processes ◽

Spatially Extended ◽

Pattern Forming ◽

Water Vegetation

Large responses of ecosystems to small changes in the conditions—regime shifts—are of great interest and importance. In spatially extended ecosystems, these shifts may be local or global. Using empirical data and mathematical modeling, we investigated the dynamics of the Namibian fairy circle ecosystem as a case study of regime shifts in a pattern-forming ecosystem. Our results provide new support, based on the dynamics of the ecosystem, for the view of fairy circles as a self-organization phenomenon driven by water–vegetation interactions. The study further suggests that fairy circle birth and death processes correspond to spatially confined transitions between alternative stable states. Cascades of such transitions, possible in various pattern-forming systems, result in gradual rather than abrupt regime shifts.

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The Role of Diversity in Spatially Extended Systems

PsycEXTRA Dataset ◽

10.1037/e538882010-001 ◽

2003 ◽

Author(s):

R. Caponetto ◽

L. Fortuna ◽

M. Frasca

Keyword(s):

Extended Systems ◽

Spatially Extended ◽

Spatially Extended Systems

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OPTIMIZATION OF ESTIMATES OF ELECTROPHYSICAL PARAMETERS AND STATISTICS OF SPATIALLY EXTENDED OBJECTS IN BROADBAND SYSTEMS OF APERTURE SYNTHESIS

Telecommunications and Radio Engineering ◽

10.1615/telecomradeng.v77.i4.50 ◽

2018 ◽

Vol 77 (4) ◽

pp. 337-348

Author(s):

Valerii K. Volosyuk ◽

S. S. Zhila ◽

V. V. Pavlikov

Keyword(s):

Aperture Synthesis ◽

Spatially Extended ◽

Electrophysical Parameters

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Walter Benjamin's media theory and the tradition of the media diaphana

Zeitschrift für Medien- und Kulturforschung ◽

10.28937/1000106452 ◽

2016 ◽

Vol 7 (1) ◽

pp. 9-26

Author(s):

Antonio Somaini

Keyword(s):

Sensory Experience ◽

Media Theory ◽

Depth Analysis ◽

Spatially Extended ◽

The Media ◽

Aristotelian Tradition

"The article presents an in-depth analysis of Benjamin’s use of the German term Medium, in order to show how his entire media theory may be interpreted as centered on the interaction between the historically changing realm of the technical and material Apparate, and what he calls in the artwork essay the »Medium of perception«: the spatially extended environment, the atmosphere, the milieu, the Umwelt in which sensory experience occurs. This notion of »Medium of perception« is then located within the long, post-Aristotelian tradition of the media diaphana, whose traces can be found in the 1920s and 1930s in the writings of authors such as Béla Balázs, Fritz Heider, and László Moholy-Nagy. </br></br>Der Artikel präsentiert eine eingehende Analyse von Benjamins Gebrauch des deutschen Begriffs »Medium«, um zu zeigen, dass seine gesamte Medientheorie fokussiert ist auf die Interaktion zwischen dem historisch veränderlichen Bereich der technischen und materiellen Apparate einerseits und dem, was er in dem Kunstwerkaufsatz das »Medium der Wahrnehmung« nennt: die räumlich ausgedehnte Umgebung, die Atmosphäre, das Milieu, die Umwelt, in der sinnliche Wahrnehmung erfolgt. Dieser Begriff des »Mediums der Wahrnehmung« wird dann innerhalb der langen, nacharistotelischen Tradition der media diaphana verortet, deren Spuren in den 1920er und 1930er Jahren in den Schriften von Autoren wie Béla Balázs, Fritz Heider und László Moholy-Nagy zu finden sind."

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